Revolver.



No. 728,896 PATENTED MAY 26, 1903. A. FYRBERG.

REVOLVER.

APPLICATION nun OCT. 28, 1901.

N0 MODEL.

yh-lasaas l-nvw-L cc r 5 m d/km' M Patented May 26, 1903 i sinni @FHQE.

JE'ERG, F WbRCES'lER, MASSACHUSETTS,

fiEQVQLVER.

SEEGIFIQWTIOI rooming part of Letters Fatent No. 728,396, dated May 26, 1903. Application filed Got-fiber 28,1901. Serial Ilo. 80,186. (No model.)

To all zen mm it may concern.-

Ee is known thnt I, ANDBEVV FYRBERG, of the city and county of Worcester and Stein of Mssssc huseitshave invented certain newsnd side view thereof with the barrel and cylinder locked in position for firing.

lsr

Fig. 3 is a simiside view of the parts shown in Fig. l

ii the cylinder position to extract the girepsrntory reloading sei f. nyler". Fig. s a vertical. longitudinal seee ct. 1, looking; in the a, showna side iew of barrel cylinder locking snism herelnnitsr described. Fig. 5 1s transverse sect-ion, shown partly inside view, through. part of said barrel and 'linder locking mechanism, taken on line 0, 2, l l the direction of the arrow. 6 is n otters view of the parts shown in so loo" ing in the direction of arrow 1;, Fig. 7 is similar view to Fig. (3 with the flea ep' 1 ol ing the thumb-latch of the barre left of. to more clearly ill 11g nnder the same.

. he barrel ixo'tlie Meme snd for l der in position longitudie hereinafter more fully set hers n .l nurpose gtoooen to 0.

ol' my said invention, escriho it more in demy better nnderstend the drawings, A represents the barrel, pivoted G thereto. no l1.CkWGld-Glilfillilillg top frame oi rrel, z-" 'itell be attached and Ge id A, and is i ff'llel, provided with indie I and head h the barrel unlocked and swung down F, the inner end of which extraotonspindle engages with the finger l of the extractordisk G when the barrel is swung down, as is shown in Fig. 3.

The hammer and trigger mechanism constitntes no part of my improvements, and it is therefore deemed unnecessary to illustrate or describe the same.

My improvement comprises in combination the thumb-hitchd, pivoted at its inner end to the transverse pin 6, and Whose outer end is adapted to hook over the vertical projectionsffon the frame A. Said thumb-latoh d is provided with the usual lnterelly-projecting hubs d 01', having milled ends to facilitate holding the same between the thumb and forefinger in operating the latch and er sdspted to fit against the outer ends g g of top frame D. The latch is held with n yield ing pressure in said position, which is its normal position, by menus of s. flat spring h,

toned at its forward end by a screw h to the too frame D, and Whose free end beers upward the .under side of the forward or inner end i of said latch.

Under the pivot e of latcn'd is arranged a. pawl j, pivoted at its forward end to 2. transverse pin is and provided at its opposite or rear end with a hook j, adapted to hoot: over the edge of "the outer end of the cylinder E to hold it from slipping out of position i0ngi tndinslly. Said hooked end j lies in a central vertical slot formed in the under side of the latch d, (see Figs. and 7,} thereby insuring said pawl from tipping laterally. The for Ward or inner end of said pawl j is provided with o. longitudin stud Z, projecting forward into n. spirals" nigit-ndinnl groove m, formed in at no ei-se spindle in. Said spindle m is lltilui to slide longitudinally in its hearing. A (BOlIlSi-tlll? yielding pressure is imparted thereto to pnslnit outward by means of spiral spring n, arranged in an opening between the inner end of said spindle in and the Well of top frame I), as shown in Fig. 5. The onlwnrd movements of she spindle sro eontrolied by moons ol 2!. set-screw 0, whose inner its in it slot formed the spindle, also shown in liig. Said. spindle may, therefore, as will no seen, he onshed inward longitudinally, Zishort lis- KOO tense, and ween said pressure is released the spring; it forces it out to its normal pooiriou, is shown in the drawings. The pu rof said spirally-grooved springspindle m to operate the hooked end j of pziwlj in. and out. This is done by the longitudinal operation of the spindle, aforesaid, through the eonneotion previously described--viz., of the stud I. engaging; with the epirnl groove in. The spindle is held from turning, well as from moving, beyond its proper longitudinal limits by the set-screw 0. Therefore it is obvious that since the pawl is attached to a fixed pivot /a when the spindle is moved in or out longitudinally the stud is forced to travel in the spiral groove, and consequently moves the hooked endj' out or in, according to which direction the spindle is moved. In practice the normal position of the pawl is shown in Fig. 4, with the hooked end j projecting beyond the under surface of top frame D, so as to hold the cylinder as is shown in Figs. 2 and 3, the spindle in oocu' pying its outward position at this time, PM}. is shown in Figs. 5, 6, and 7. Being thus made and. adjusted, it will. be apparent that by pushing inward on the end 27' of the spindle the stud will be caused to-travel along the spiral groove m, and thereby moves the hooked end 7' of the new inward to unlock the cylinder, so that it may be removed.

The obovodesoribed cylinder-lock device is simple in construction, positive in action, and strong and durable, as l have fully demonstruted in practice.

It will of course be understood that no v claim is mede,broadly, to anyoi the features hercinoefore described and shown in the drawings, my invention being limited to substantiolly the construction adopted and set n forth in the claims.

'What I claim as new and of my invention, and desire to secure by Letters Patent, is

1. In a revolver, the combination of top frame D the upper part of frame A,-and eyl- 5 inder E, with the thumb-latch 01, its pivot spring h, fastened at one end to said top frame D, and Whose free end bears against the inner end ofi thumbdetch d; lever 7, ar-

ranged under pivot e, and provided with the 5':

hook j at its rear end and also provided with the stud l at its forward end; the pivot 75 of said lever, transverse spindle m, provided with the spiral groove m adapted to receive the aforesaid stud I; springun, for exerting a longitudinalpressure onspindle m,nnd means for controlling the longitudinal movements of seidspindle and for keeping it from turning', substantially as end for the purposes set forth.

2. In it revolver, the combination of top frame 1) and oylinder E, with transverse spindle m, fitted to slide longitudinally in said top frame, and provided with a spiral groove m, spring" '72 for exertiugzi longitudinal prossure against said spindle, means for controlling the longitudinal movements of the spindlo and {or preveutiugit from turning; lever j, provided with n stud let its forward end adopted to engage with the spiral groove m, F0

and. also provided with a hook j at its opposite end adapted to fit over $.16 outer edge of the cylinder, and the pivot of said lover, substantially 21s and for the purpose set forth. ANDRE N FYRIBERG. Witnesses:

A. A. vBitumen, W. 15. Noni-15E. 

